Prefabricated hollow superposed beam, and cast-in-situ construction method for beam and precast slab

Abstract

A cast-in-place construction method for a prefabricated folded hollow beam and a precast slab belongs to the technical field of building elements. The section center of a beam body (2) is provided with a through hole (1). A vertical fiber (4) which is connected with a vertical bar of an inner frame (7) of the beam body (2) is arranged at the upper part of the beam body (2). The method comprises the following steps: A. the two sides of the upper plane surface of the beam body (2) are relatively provided with precast slabs (3), and a pouring joint is reserved between the precast slabs (3) and the vertical fiber (4); and B. the contact joint of the precast slabs (3) of the beam body (4) is cast with concrete until the vertical fiber (4) is buried by the concrete, or the concrete is cast entirely above the beam body (2) and the precast slabs (3), and then the cast-in-place beam slab can be formed after jolt ramming, trowelling, curing and solidification. The weight of the beam body (2) can be reduced. The additive effect generated by the vertical fiber leads to comparatively large enhancement of the beam height, and no occupation of inner space of the building structure. The cast-in-place beam slab is suitable for the buildings of the frame structure and the high rise buildings.

Description

technical field [0001] The invention relates to a construction method of prefabricated beams and beam-slab components, in particular to a prefabricated hollow composite beam and a cast-in-place construction method of beams and prefabricated slabs. It belongs to the technical field of concrete prefabricated components and building construction. Background technique [0002] At present, with the continuous improvement of people's living standards, home decoration is also increasingly emphasizing personalized redesign, high-end and luxury. Adapting to this, the structural form of the house is also based on the frame structure that creates flexible and variable elastic space. as the subject. The main forms of frame structure are cast-in-place reinforced concrete frame structure and assembled frame structure, among which the assembled frame structure is mostly steel structure. Because the joints of assembled concrete structural members mostly adopt the "steel stool" type, the a...

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Problems solved by technology

[0003] The first purpose of the present invention is to provide a prefabricated hollow composite beam for the defects and deficiencies of the existing beam members, such as large ineffective dead weight, beam height limited by the structure, and difficult to increase.

[0004] The second purpose of the present invention is to provide a prefabricated hollow composite beam and prefabricated slab for the defects and deficiencies of the existing beam and slab construction method, such as time-consuming material consumption, large amount of steel used for beam body joints, and easy oxidation of joint metal materials. Pouring construction method

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